Question

Length of a rectangle is 3m less than four times its breadth. If the perimeter of the rectangle is 94 m, find its length and breadth.​

Answer 1

Answer:

The length is 37m, and the breadth is 10m.

Step-by-step explanation:

We would start with the simple formula  P=2(l+b)  

Then, as we know  l=4b−3 , we can plug that in to make P=2(5b−3)  

Now we know the value of the perimeter,  P=94 , so we can plug that in

94=2(5b−3)

=> 47=5b−3

=> 50=5b

=> b = 10  

So now we know that the breadth is 10m, we can plug that into  l=4b−3  to get:

l=4(10)−3  

=> l=40−3  

=> l=37

The length is 37m, and the breadth is 10m.